JEE Mains · Chemistry · STD 11 - 7. Redox reactions
Some \(\mathrm{CO}_2\) gas was kept in a sealed container at a pressure of 1 atm and at 273 K . This entire amount of \(\mathrm{CO}_2\) gas was later passed through an aqueous solution of \(\mathrm{Ca}(\mathrm{OH})_2\). The excess unreacted \(\mathrm{Ca}(\mathrm{OH})_2\) was later neutralized with 0.1 M of 40 mL HCl . If the volume of the sealed container of \(\mathrm{CO}_2\) was \(x\), then \(x\) is ________ \(\mathrm{cm}^3\) (nearest integer).
[Given : The entire amount of \(\mathrm{CO}_2(\mathrm{~g})\) reacted with exactly half the initial amount of \(\mathrm{Ca}(\mathrm{OH})_2\) present in the aqueous solution.]
- A 40
- B 45
- C 50
- D 55
Answer & Solution
Correct Answer
(B) 45
Step-by-step Solution
Detailed explanation
Let moles of \(\mathrm{CO}_2=\mathrm{n}\) moles of \(\mathrm{Ca}(\mathrm{OH})_2\) total initially \(=2 \mathrm{n}\) excess \(\mathrm{Ca}(\mathrm{OH})_2=\mathrm{n}\) gm equivalent of \(\mathrm{Ca}(\mathrm{OH})_2=\mathrm{gm}\) equivalent of HCl…
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